Planet
navi homePPSaboutscreenshotsdownloaddevelopmentforum

source: code/trunk/src/external/bullet/BulletCollision/Gimpact/gim_memory.h @ 6727

Last change on this file since 6727 was 5781, checked in by rgrieder, 15 years ago

Reverted trunk again. We might want to find a way to delete these revisions again (x3n's changes are still available as diff in the commit mails).

  • Property svn:eol-style set to native
File size: 5.0 KB
Line 
1#ifndef GIM_MEMORY_H_INCLUDED
2#define GIM_MEMORY_H_INCLUDED
3/*! \file gim_memory.h
4\author Francisco Len Nßjera
5*/
6/*
7-----------------------------------------------------------------------------
8This source file is part of GIMPACT Library.
9
10For the latest info, see http://gimpact.sourceforge.net/
11
12Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
13email: projectileman@yahoo.com
14
15 This library is free software; you can redistribute it and/or
16 modify it under the terms of EITHER:
17   (1) The GNU Lesser General Public License as published by the Free
18       Software Foundation; either version 2.1 of the License, or (at
19       your option) any later version. The text of the GNU Lesser
20       General Public License is included with this library in the
21       file GIMPACT-LICENSE-LGPL.TXT.
22   (2) The BSD-style license that is included with this library in
23       the file GIMPACT-LICENSE-BSD.TXT.
24   (3) The zlib/libpng license that is included with this library in
25       the file GIMPACT-LICENSE-ZLIB.TXT.
26
27 This library is distributed in the hope that it will be useful,
28 but WITHOUT ANY WARRANTY; without even the implied warranty of
29 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
30 GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
31
32-----------------------------------------------------------------------------
33*/
34
35
36#include "gim_math.h"
37#include <memory.h>
38
39#ifdef PREFETCH
40#include <xmmintrin.h>  // for prefetch
41#define pfval   64
42#define pfval2  128
43//! Prefetch 64
44#define pf(_x,_i)       _mm_prefetch((void *)(_x + _i + pfval), 0)
45//! Prefetch 128
46#define pf2(_x,_i)      _mm_prefetch((void *)(_x + _i + pfval2), 0)
47#else
48//! Prefetch 64
49#define pf(_x,_i)
50//! Prefetch 128
51#define pf2(_x,_i)
52#endif
53
54
55///Functions for manip packed arrays of numbers
56#define GIM_COPY_ARRAYS(dest_array,source_array,element_count)\
57{\
58    for (GUINT _i_=0;_i_<element_count ;++_i_)\
59    {\
60        dest_array[_i_] = source_array[_i_];\
61    }\
62}\
63
64#define GIM_COPY_ARRAYS_1(dest_array,source_array,element_count,copy_macro)\
65{\
66    for (GUINT _i_=0;_i_<element_count ;++_i_)\
67    {\
68        copy_macro(dest_array[_i_],source_array[_i_]);\
69    }\
70}\
71
72
73#define GIM_ZERO_ARRAY(array,element_count)\
74{\
75    for (GUINT _i_=0;_i_<element_count ;++_i_)\
76    {\
77        array[_i_] = 0;\
78    }\
79}\
80
81#define GIM_CONSTANT_ARRAY(array,element_count,constant)\
82{\
83    for (GUINT _i_=0;_i_<element_count ;++_i_)\
84    {\
85        array[_i_] = constant;\
86    }\
87}\
88
89
90///Function prototypes to allocate and free memory.
91typedef void * gim_alloc_function (size_t size);
92typedef void * gim_alloca_function (size_t size);//Allocs on the heap
93typedef void * gim_realloc_function (void *ptr, size_t oldsize, size_t newsize);
94typedef void gim_free_function (void *ptr);
95
96
97///Memory Function Handlers
98///set new memory management functions. if fn is 0, the default handlers are used.
99void gim_set_alloc_handler (gim_alloc_function *fn);
100void gim_set_alloca_handler (gim_alloca_function *fn);
101void gim_set_realloc_handler (gim_realloc_function *fn);
102void gim_set_free_handler (gim_free_function *fn);
103
104
105///get current memory management functions.
106gim_alloc_function *gim_get_alloc_handler (void);
107gim_alloca_function *gim_get_alloca_handler(void);
108gim_realloc_function *gim_get_realloc_handler (void);
109gim_free_function  *gim_get_free_handler (void);
110
111
112///Standar Memory functions
113void * gim_alloc(size_t size);
114void * gim_alloca(size_t size);
115void * gim_realloc(void *ptr, size_t oldsize, size_t newsize);
116void gim_free(void *ptr);
117
118
119
120#if defined (WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__)
121    #define GIM_SIMD_MEMORY 1
122#endif
123
124//! SIMD POINTER INTEGER
125#define SIMD_T GUINT64
126//! SIMD INTEGER SIZE
127#define SIMD_T_SIZE sizeof(SIMD_T)
128
129
130inline void gim_simd_memcpy(void * dst, const void * src, size_t copysize)
131{
132#ifdef GIM_SIMD_MEMORY
133/*
134//'long long int' is incompatible with visual studio 6...
135    //copy words
136    SIMD_T * ui_src_ptr = (SIMD_T *)src;
137    SIMD_T * ui_dst_ptr = (SIMD_T *)dst;
138    while(copysize>=SIMD_T_SIZE)
139    {
140        *(ui_dst_ptr++) = *(ui_src_ptr++);
141        copysize-=SIMD_T_SIZE;
142    }
143    if(copysize==0) return;
144*/
145
146    char * c_src_ptr = (char *)src;
147    char * c_dst_ptr = (char *)dst;
148    while(copysize>0)
149    {
150        *(c_dst_ptr++) = *(c_src_ptr++);
151        copysize--;
152    }
153    return;
154#else
155    memcpy(dst,src,copysize);
156#endif
157}
158
159
160
161template<class T>
162inline void gim_swap_elements(T* _array,size_t _i,size_t _j)
163{
164        T _e_tmp_ = _array[_i];
165        _array[_i] = _array[_j];
166        _array[_j] = _e_tmp_;
167}
168
169
170template<class T>
171inline void gim_swap_elements_memcpy(T* _array,size_t _i,size_t _j)
172{
173        char _e_tmp_[sizeof(T)];
174        gim_simd_memcpy(_e_tmp_,&_array[_i],sizeof(T));
175        gim_simd_memcpy(&_array[_i],&_array[_j],sizeof(T));
176        gim_simd_memcpy(&_array[_j],_e_tmp_,sizeof(T));
177}
178
179template <int SIZE>
180inline void gim_swap_elements_ptr(char * _array,size_t _i,size_t _j)
181{
182        char _e_tmp_[SIZE];
183        _i*=SIZE;
184        _j*=SIZE;
185        gim_simd_memcpy(_e_tmp_,_array+_i,SIZE);
186        gim_simd_memcpy(_array+_i,_array+_j,SIZE);
187        gim_simd_memcpy(_array+_j,_e_tmp_,SIZE);
188}
189
190#endif // GIM_MEMORY_H_INCLUDED
Note: See TracBrowser for help on using the repository browser.